A lot of women don't want sex for some time after the birth of a baby - it's down to a variety of things - tiredness, lack of sleep with feeding the baby at night etc, hormonal disturbances, just the sheer overwhelming feeling of having to care for this new person. If you had sex 7 times in the last 4 months, I think you're doing pretty well, actually!!!

I used to be a marital therapist, and we were told NOT to refer couples for sex therapy until their baby was a year old - as it is impossible to work on a couples' sexual relationship when they have a baby under a year. I think you just have to be patient for a few more months.

I don't think you should worry about her cheating. I can almost guarantee you that with a new baby, hormone roller coaster, plus whatever the depo shot is doing (birth control can decrease sex drive), she's probably just not interested in sex in general. Try not to take it personally. I'm sure she stills loves you and is sexually attracted to you, but sometimes it just takes a while for these things to work themselves out. Be supportive of her and be honest, talk to her calmly (and without blaming) about how you're feeling.

I'm currently pregnant and my sex drive has gone down to nil...and it has nothing to do with how I feel about my DH.