Malt-have 
and a hug. Now I want you to imagine that I am say next to you (with a packet of choccie bics) and am going to ask you this most nicely.
I want you to ring your Gp this morning . If you can't face going for an appt , get them to ring back or visit.
You need to do 2 things . Get some omeprazole as Rennies alone aren't good enough- your gut is sensitised during chemo so omeprazole offers not just relief but protection as you don't want to end up with permanent damage.
The second thing is that it is normal to struggle with all this , you don't have to struggle as much as you do. I can see how you lashed out at dh and don't want to go out but it must be horrible for you.
I think that maybe getting some anti depressants will be of huge benefit. They may also help your sleep which won't be helping how you feel. Lots of people on here have them and helped a lot ( ned, topsy come to mind - think topsy described them as taking the edge off).
The other thing is maybe getting someone to talk to. Counselling will help have way to vent (I only get thru this at times as have been in psychotherapy for years) . Also it has been shown that learning cognitive behaviour techniques can really help you cope when you get into panic or anxiety mode .
I just think that suffering emotionally is obviously part of all this new normal but there are things to be done to help as a side effect just as if it is one of your physical side effects.
The wig visit is bound to be a funny moment as it reminds you of visual effects of all this . But I found it fun and you would be amazed how good wigs are ( I am with kitkat as Went from many bad hair days to instant style with mine). Also there is no reason to think cold cap won't work for you.
Trice-your onc is a laugh " not to worry". But does have a point as I think it's very normal to see them for catch up during chemo , radio or op . I know I always have to see my onc during/after any treatment .
Into Gp to update her and get prescription later then may get my nails done.