I have done alot of research on tipped uterus. I have one too. Instead of it being in the shape of a "p" (the straight part being where a tampon would go and the top being the uterus) it looks more like a "q" some sexual positions may be more uncomfortable than others causing the penis to bump into your cervix. Just experiment and figure it out.
I also read somewhere that it doesnt affect conceiving that much differently and when the baby grows it sort of straightens itself out.
If you are trying to concieve try having him pull back just a little when he ejaculates so the sperm sort of "sprays" the cervix. Because sometimes if he is in deep inside you it sort of pools into the dip and the sperm have to kinda "jump" into the right place.
I didnt have much trouble getting pregnant the first time even when I didnt know all that, but those are just some bits of info I came across.
I lost my pregnancy at 5 months(unrelated to tipped uterus) and have been trying for 2 months to get pregnant again. My first pregnancy I conceived the first month. However I really havent been as trying quite as hard this time due to mixed emotions.
Anyway dont worry 1 in 5 ladies have a "q" instead of a "p"