Advice please

Been with my boyfriend for 6 months, i came out of a very bad toxic relationship nearly 2 years ago. The man i am with now is literally a gods send! He does absolutely everything for me, loves me, treats me and my daughter right and i honestly couldnt of asked for a better man, adore him! Recently my sex drive has gone down HILL and i just dont know why. My sex drive was fine, we was having sex absolutely fine nothing wrong whatsoever! But recently i just cant get wet, we do foreplay before sex and i just still cant get wet.. baring in mind we do the exact same foreplay we did before my sex drive went down hill and i was able to get soo wet and really horny but now i cant get wet at all, i cant get horny or turned on. I know its not him, its me. I love him to bits but my sex drive is just rapidly deteriorating and i really hate it. I havent been to see my doctor.. i have been thinking that i should go and talk to my doctor about it to see if theres anything that can cause it and to also see if doctor can help! I havent been stressed or anything like that… i feel like a failure its awful. I just dont know what to do.