Suggest Remedy For Constipation And Bloating

Hi, I eat a healthy diet (lots of fruit/veg and some wholegrains; I don t have much dairy or red meat) and I walk the dog for 45 mins a day, yet I am often constipated (2 - 3 stools per week which never accounts for how much I ve eaten!). I also often get stomach aches caused by gas and bloating. Since this has been going on I ve also had eczema on my scalp. It s been increasingly hard to lose weight too (the only thing that works is a zero carbon diet which makes me feel unwell and increases the constipation). I was diagnosed with PCOS 12 years ago - is that relevant? Please help me....I m at my wits end.