Buzzy - I was on the long protocol so about 10 days of down regging after taking 1 x injection of prostap. Then stimming took me about 16 days I think as I needed a higher dose half way through as follies weren't growing. It usually takes 10-14 days.
When the clinic confirm your follies are nearly big enough, they set the egg collection date for 2 days later - so at this point you get some firm dates to tell work. EC was a Thursday for me. I counted my EC day as first day of sick leave. The GP kindly gave me a 3 week sick note to start from the monday after EC, so I was self certified until the following Monday.
I personally loved EC day. I was on lorazapam which made me drowsy and I loved it so much - I really didn't have any emotions that day which was an amazing experience when you are always thinking, thinking.
The procedure was straight forward and yes uncomfortable but I slept through a lot and they control pain VERY well.
They ring you the next day with a fertilsation rate. I have fond memories of the phone calls from the embryologists during these few days.
DH and I use to make up songs about our embryo's to encourage them to grow. I know you will think I am crackers for saying this but in my heart I felt like I was helping and supporting them. We were lucky - 9/10 fertilised. I think 70% fertilisation rate is about average.
They then call you back in 3 days later. I think the embryologist had rung us again before this stage to say how many embryos were still going. At this stage they decide if you should have 3 day embryo(s) put back in or wait for blastocysts at 5 days. They call you in to clinic so you are there ready to receive them if needed. Then we had a meeting with the embryologist with the final decision. She told us 7 were still going so they were happy for us to wait and see if they progress to blastocyst stage. I thnk you need 3 or 4 embryos at day 3 for them to want to leave them until day 5.
So then we knew for sure we would be back in at day 5. Again we had another meeting with the embryologist. We were told we had 4 definate blastocysts and a possible further 2 that were only just getting to blasto stage. They said they would make a final decision about those that day. The embryologist also told us which one would go back in that day - the best one.
Egg transfer is also straight forward and it is back to theatre with a gown and hat, as does DH. Mr Sar got all giddy about this.
. During ET, the embryologist popped her head throught the serving hatch and told us that the other 2 embryos were going to be frozen too. This meant we got 5 put in the freezer. 3 goodish ones and 2 borderline ones.
ET was like a smear but longer and not painful - just mildly uncomforable and nothing compared to some of the tests I have had. We got to see the embryo on a screen before it was transfered which was great.
Then you have to wait a further 10 days ish before they call you back for a blood test or 14 days ish for a urine test.
But ultimatly you know before then if you are pregnant as everyone does a HPT as normal.
Because of my 3 week sick note, I had a couple of days plus the weekend after I got my BFN before returning to work. This was vital to me as I could begin to process what had happened and start the tears off (and period cramps) before straight back in to work. Although getting back to work was a good distration too. So in my opinion, the timmings were right. I really enjoyed the time away despite some of the anxiety.
For FET, I plan to get a 2 week sick note starting from the first day of transfer.
Tips: I spoke about this with MrsGee (recently pregnant lady) - if you do have time off work with IVF make sure you have lots of relaxation as that is the whole point of it but structure your days so you don't become panicked and full of worry. E.g. a daily walk, meet a freind for tea and cake, plan DVD night, plan future holidays, update CV etc.
Also, if you do have time off work, consider taking the day before EC off work rather than from the day of EC. This is because I felt woozy and 'out of it' after the trigger shot (taken 36 hours before EC). I was sat in a meeting the day before EC really not processing what was happening and I felt like I was sliding down the chair. 
Buzzy - let me know if you want to know about anything else. Good luck hon. x