So sorry to hear hopefully. I think it's probably a good idea to see the doctor, like you mentioned. If anything is stopping you getting pregnant, they should treat it. As to age gaps, I wouldn't fret too much. I know parents with all sorts of age gaps, and they are all happy with what they have, because there are advantages to all. Crossing my fingers that the goddess of fertility visits you soon.
I went to the doctor about my lumpy breast, and she prodded and felt for ages. Then after a long gap said "I'm 99,9 % sure that this is normal breast tissue, but I don't want to just ignore it. Come back on the 7th of July if you still have it and I'll refer you to an specialist" (the 7th of July is when she's back from holidays). I have to say that I am not overly worried either, but my aunt (a pathologist) said that she'll do a biopsy when I'm in Spain next weekend. Ah, yes, I'm going to Spain next weekend, which is really exciting. It is my grandmother's 89th birthday. I wasn't planning on going due to uncertainty with house move, but then I thought "hang on, the lady is 89, and I'm not going to be there with her great grand child? Sod that". And bought the tickets. DP is staying, mostly to sleep and watch Wimbledon.
As to the house drama, it sounds like things are moving along and we'll be moving soon! I've just been given my first ever gardening book by a friend for my birthday!