Feeling sad

3Weeks ago I found out that my husband was sex texting this lady for about 2months, I felt really betrayed, am not sure if he slept with her but I asked him then he denied but I really feel there is more to the sext texting thing, I don't know what to do, last week I found out am pregnant, then just today I found out that my husband is texting a new bitch. I really feel frustrated I never wanted to be running up and down looking what he is doing but he is making me do it. What should I do? I don't trust him at all