Help!? Please advice

So I've been with my boyfriend for 7 months now & in our first month we had sex 2-3 times then later as the relationship progressed into our 4th month of our relationship we have constantly had sex 1-3 a week. & as we have done it my vagina has developed this rare & uncomfortable smell when I get wet & even when it's just a regular day & I'm walking or sitting down its like my vagina releases this watery smelly onto my underwear or anything I wear. & I don't know what to do I wipe & wash myself pretty good but still nothing seems to work! I have had sex before this wasn't my first time & this had never happened till now. Any advice would help please because it's getting to a point where I'm really embarrassed to have sex with my boyfriend because how much it smells.