4 months sleep regression

Since my daughter been born she would never sleep, put her down, wake up, she would only sleep on you. For the past 2 weeks I have been putting her to bed between 6 and 8, she been waking up between 2 and 4 for feed which is great for me and go back to sleep. However these past 3 days she has been waking up every 45 minutes I'm knackered I got a stupid cold too, so in the end I put her in my bed and from 4 am she fall asleep till 7. I didn't want too but I need sleep. Anybody got any tips or going through this???