Not wet enough?

For awhile (could be a little more than a month - 2 months) now, when my boyfriend and I start to have sex I feel like Im not wet as much as I used to be. I know foreplay can be a big part but there are times i dont even want foreplay either, I just wanna get at it lol and I mean if I feel like that shouldn't my body be responding that way too? During sex, it just starts to get uncomfortable and then the more drier I get even though I was so turned on! And after were done it just feels sore down there. Even though my boyfriend wont admit it, I know he notices it too and its just frustrating because I want to enjoy and be turned on and I feel like im in the moment but it just doesnt happen. My boyfriend does try to help me by fingering me to squirt and I do but its just not enough.

I looked it up and it might be because of my allergy medicine which can cause everything to dry up or maybe its just all to in my head? Idk should I start looking into lube? And if so, what is the best,safe,fun kind to get? Or is it something else?

any advice or tips u give will be much appreciated! Im getting so tired of not enjoying sex :(