Struggling

So me and my bf attempted shower sex yesterday, and because his shower is really small, and he's tall, we found it quite hard (no pun intended). But it's also that I am really tight, even though I'm not a virgin anymore (lost it about 2 months ago). Every time we have the chance to have sex, after 2-3 weeks in between each time, I'm really tight and we find it difficult. Is this the same for anyone else? Or does anyone have any advice for my situation?