Hi there! Well I haven't had as much experience as you with pregnancies as I'm only 13 weeks into my first one but during this one I bled slightly for about 3 weeks. I freaked and was very worried but after 4 (yes 4!) u/s it showed everything was going very well. I know bleeding can be a bad sign because I did m/c last year but this time everything went well. I has m/s this time so to me that was a rally good sign that everything was going well cause my hormones were going crazy! Hope this helps a little!