Hola Molle and Arlene,
How exciting that you are planning your pilgrimage for next spring - such a beautiful time to walk el camino with breathtaking wild flowers, big fat baby storks in huge nests on top of towers and steeples, and everything beautifully green!
However, I'm sure you know that March - April can also be a treacherous time of the year, especially in the mountain areas. PLEASE check the weather forecasts each day before you start. The locals know their weather so always listen to them if they warn you not to walk or to walk a certain route. And, if the weather does change suddenly, stay close to other pilgrims.
There are a few scary posts on this Forum made in April of people being caught in the snow, a pilgrim dying between St Jean and Roncesvalles and another member having to return to Canada after suffering frostbite and hypothermia. Be prepared with warm clothing and waterproofs. Know the local emergency numbers to contact eg: 112 is the Europe-wide emergency number. It works even if you have no money in a pre-paid mobile phone or even if your supplier has no network. It works 24/7 365 days - and the operators speak many languages. The number for the Guardia Civil in Spain is 062.
You probably won't need any of these numbers but best to be prepared!
Pilgrim hugs,
Sil